Cita APA (7a ed.)

Caldwell, E. (1948). This very earth (14.). Signet Books.

Cita Chicago Style (17a ed.)

Caldwell, Erskine. This Very Earth. 14. New York, Estados Unidos: Signet Books, 1948.

Cita MLA (9a ed.)

Caldwell, Erskine. This Very Earth. 14. Signet Books, 1948.